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A

1

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1

2

3

4

5

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9

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11

12

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14

C21

C22

C27

C28

C29

C31

C32

C37

C42

C53

C46

C49

C54

C55

C57

C64

L16

C68

C69

C70

C71

C72

C75

C77

C91

C92

C96

C1

C99

C2

C3

1

3B

B

E

C7

C9

D2

D4

D5

D7

F1

K1

L2

L3

L4

L5

L6

L7

L8

L9

L10

L11

L12

R71

CN51

C106

CN52

D51

D52

IC1

C112

C117

C118

R10

R11

R13

R14

R15

R16

R17

R18

R19

R20

R21

R22

R23

R24

R25

Q2

R26

C136

R27

C137

Q3

E

C
B

R28

R29

R30

R31

R32

C143

R34

R1

R35

R36

C165

R38

L17

R6

R7

R8

R9

R40

R41

R70

R45

VR1

R48

R49

R50

C161

C162

R52

C163

R53

C164

R57

R61

R62

R63

R64

CN1

TX IN

CN3

ANT SW

1

8

GND

NC

8T

PC

FA

S

PDT

BUP

TMP

CN4

CN5

CN6 MAIN DC

(RED)

CN7 BACKUP

(ORANGE)

GND

+B2

GND

+B1

CN8 GND

(BLACK)

C10

C11

C12

C13

C14

C15

C16

C19

J72-0970-19 (B/2)

J72-0970-19 (A/2)

CHARGE

Vg

Vg

+

+

FAB 1

2

FAG

+

Q4

G

D

TMP

C30

PC

1

4

5

8

PDT

8T

DET

Q5

G

D

+

FWD

TH1

REV

ANT

Main DC

Back up battery

+B1

GND

+B2

C160

L20

C173

L19

RX

E

D53

CN53

TKR-751  

PC BOARD

PC BOARD    

TKR-751

FINAL UNIT (X45-3732-71)  Component side view  (J72-0970-19)

FINAL UNIT (X45-3732-71)  Component side view  (J72-0970-19)

Ref. No. Address

IC1

8K

Q2

9H

Q3

9F

Q4

6I

Ref. No. Address

Q5

5L

D2

8J

D4

7Q

D5

9Q

Ref. No. Address

D7

3J

D51

7B

D52

8B

D53

8R

Component side

Foil side

Layer 1

Layer 2

Layer 3

Layer 4

Summary of Contents for TKR-751

Page 1: ...ing or otherwise for any purpose without the prior written permission of Kenwood Disclaimer While every precaution has been taken in the preparation of this manual Kenwood assumes no responsibility for errors or omissions Neither is any liability assumed for damages resulting from the use of the information contained herein Kenwood reserves the right to make changes to any products herein at any t...

Page 2: ...rminal E70 0402 05 DC cord Ext DC in E30 3414 05 Fuse Blade 10A 32V F06 1032 05 x 2 MODIFICATION 2 PARTS LIST 3 EXPLODED VIEW 5 PC BOARD FINAL UNIT X45 3732 71 6 SCHEMATIC DIAGRAM 10 CONTENTS SUPPLEMENT This supplement to the service manual is available for products with serial number 60700001 or later This service manual contains a parts list schematic diagrams and PC board of a new final unit fo...

Page 3: ...moved antenna cable assy on the BNC connector side Strip off the insulation of the cut off coaxial cable to pre pare it to be soldered Strip off the insulation so that the cable can be soldered Cut off the coaxial cable at this point About 20mm About 8 10mm Fig 4 3 2 Connection 1 Solder the prepared coaxial cable to the final unit 2 Connect the pin connector of the coaxial cable to CN18 of the TX ...

Page 4: ... C 1000PF K C91 C92 0777 05 ELECTRO 1000UF 25WV C92 CM73F2H102J CHIP C 1000PF J C96 CC73FCH1H180J CHIP C 18PF J C98 CK73GB1H102K CHIP C 1000PF K C99 C90 4016 05 ELECTRO 47UF 16WV C103 CC73GCH1H101J CHIP C 100PF J C105 CC73GCH1H101J CHIP C 100PF J TKR 751 C106 109 CK73GB1H102K CHIP C 1000PF K C110 C92 0628 05 CHIP TAN 10UF 10WV C112 C93 0560 05 CHIP C 10PF D C117 CM73F2H221J CHIP C 220PF J C118 CK7...

Page 5: ...CHIP R 0 OHM R50 RK73EB2B222J CHIP R 2 2K J 1 8W R52 53 RK73GB1J102J CHIP R 1 0K J 1 16W R55 RK73GB1J102J CHIP R 1 0K J 1 16W R56 R92 1317 05 CHIP R 18 J 1W R57 RK73GB1J224J CHIP R 220K J 1 16W R60 R92 1252 05 CHIP R 0 OHM J 1 16W R61 R92 2687 05 RESISTOR 5 6 J 5 0W R62 63 R92 0670 05 CHIP R 0 OHM R64 R92 1252 05 CHIP R 0 OHM J 1 16W R70 R92 1205 05 CHIP R 120 J 1 4W R71 R92 0670 05 CHIP R 0 OHM R...

Page 6: ... 29 64 51 20 19 27 25 26 1 Dx3 Nx2 Px11 L Lx2 Dx3 Final B 2 Final A 2 D M4 x 14 N30 4014 46 L M3 x 8 N67 3008 46 N M2 6 x 6 Br Tap N87 2606 46 P M3 x 6 Br Tap N87 3006 46 Parts with the exploded numbers larger than 700 are not supplied ...

Page 7: ... C B R28 C143 R1 R6 R7 R8 R9 R48 R49 R50 R52 R53 R61 R64 CN1 TX IN CN4 CN5 CN6 MAIN DC RED CN7 BACKUP ORANGE GND B2 GND B1 CN8 GND BLACK C10 C11 C12 C13 C14 C15 C16 C19 J72 0970 19 B 2 CHARGE Vg FAB 1 2 FAG Q4 G D TM C30 Main DC Back up battery B1 GND B2 TKR 751 PC BOARD FINAL UNIT X45 3732 71 Component side view J72 0970 19 Ref No Address IC1 8K Q2 9H Q3 9F Q4 6I Ref No Address Q5 5L D2 8J D4 7Q ...

Page 8: ... R24 R25 R26 R27 R28 R29 R30 R31 R32 R34 R35 R36 C165 R38 L17 R40 R41 R70 R45 VR1 C161 C162 C163 C164 R57 R62 R63 CN3 ANT SW 1 8 GND NC 8T PC FAS PDT BUP TMP J72 0970 19 A 2 Vg TMP C30 PC 1 4 5 8 PDT 8T DET Q5 G D FWD TH1 REV ANT C160 L20 C173 L19 RX E D53 CN53 PC BOARD TKR 751 FINAL UNIT X45 3732 71 Component side view J72 0970 19 Component side Foil side Layer 1 Layer 2 Layer 3 Layer 4 ...

Page 9: ...48 R49 R50 C161 C162 R52 C163 R53 C164 R57 R61 R62 R63 R64 CN1 TX IN CN3 ANT SW 1 8 GND NC 8T PC FAS PDT BUP TMP CN4 CN5 CN6 MAIN DC RED CN7 BACKUP ORANGE GND B2 GND B1 CN8 GND BLACK C10 C11 C12 C13 C14 C15 C16 C19 J72 0970 19 B 2 J72 0970 19 A 2 CHARGE Vg Vg FAB 1 2 FAG Q4 G D TMP C30 PC 1 4 5 8 PDT 8T DET Q5 G D FWD TH1 REV ANT Main DC Back up battery B1 GND B2 C160 L20 C173 L19 RX E D53 CN53 TK...

Page 10: ...3 C44 C80 C81 C82 C83 C84 C85 C86 IC2 Q8 1 3 4 5 D56 C174 D55 R73 C60 C155 R72 C145 C146 C171 C172 R60 C167 TKR 751 PC BOARD FINAL UNIT X45 3732 71 Foil side view J72 0970 19 Ref No Address IC2 7J IC3 9O Q8 8I Q9 7O Ref No Address D1 8L D6 8O D8 5O D9 6O Ref No Address D55 7A D56 6B ...

Page 11: ... C98 D1 D6 D8 D9 C107 C108 C109 C110 IC2 IC3 I G O Q9 R55 R56 1 3 4 5 GND B2 GND B1 Main DC Back up battery B1 GND B2 R60 C166 C167 C89 C170 C103 C168 C105 C169 PC BOARD TKR 751 FINAL UNIT X45 3732 71 Foil side view J72 0970 19 Component side Foil side Layer 1 Layer 2 Layer 3 Layer 4 ...

Page 12: ...56 1 3 4 5 GND B2 GND B1 Main DC Back up battery B1 GND B2 D56 C174 D55 R73 C60 C155 R72 C145 C146 C171 C172 R60 C166 C167 C89 C170 C103 C168 C105 C169 TKR 751 PC BOARD PC BOARD TKR 751 FINAL UNIT X45 3732 71 Foil side view J72 0970 19 FINAL UNIT X45 3732 71 Foil side view J72 0970 19 Ref No Address IC2 7J IC3 9O Q8 8I Q9 7O Ref No Address D1 8L D6 8O D8 5O D9 6O Ref No Address D55 7A D56 6B Compo...

Page 13: ...1000p C9 1000p 2SC3356 R24 Q2 R11 4 7k R50 2 2k R6 22 R17 150k R8 10 2 COM 3 IN 1 OUT C12 1000p R9 56 C98 1000p R53 1k C16 1000p C21 22p C85 1000p C2 1000p C1 1000p C10 1000p C84 1000p R52 1k C96 18p C80 1000p C143 33p R14 180 R16 82 L4 22n L5 22n 1 GND1 2 GND2 3 HYST 4 VCC 5 ToVER R60 0 R32 100k C53 0 047u FINAL UNIT X45 3732 71 A 2 THERMOSTAT THERMAL SENSE DC SWITCH DC SWITCH TX RX UNIT X57 6952...

Page 14: ...p C70 9p CN5 1 E 2 B 3 B C165 1000p L16 15n R70 120 R71 0 L17 18n C166 22p C167 100p C146 100p C145 22p C160 1000p L19 9 5T D53 MA4PH633 L20 5T C60 1000p C173 18p R73 0 C174 27p R72 120 C155 1000p C172 100p C171 22p C103 100p C168 22p C169 22p C105 100p K1 C75 33p B1 SURGE PROTECTOR B2 CURRENT PROTECTOR GND BACK UP BATTERY REVERSE CURRENT PROTECTION DC AMP TX DRIVE AMP Q5 B1 W3 W5 GND CHARGE MAIN ...

Page 15: ...p C80 1000p C143 33p R14 180 R16 82 L4 22n L5 22n C31 56p C164 82p C70 9p CN5 1 E 2 B 3 B 1 GND1 2 GND2 3 HYST 4 VCC 5 ToVER R60 0 R32 100k C53 0 047u C165 1000p L16 15n R70 120 R71 0 L17 18n C166 22p C167 100p C146 100p C145 22p C160 1000p L19 9 5T D53 MA4PH633 L20 5T C60 1000p C173 18p R73 0 C174 27p R72 120 C155 1000p C172 100p C171 22p C103 100p C168 22p C169 22p C105 100p K1 C75 33p FINAL UNI...

Page 16: ...Boulevard Ney 75018 Paris France KENWOOD ELECTRONICS U K LIMITED KENWOOD House Dwight Road Watford Herts WD18 9EB United Kingdom KENWOOD ELECTRONICS EUROPE B V Amsterdamseweg 37 1422 AC Uithoorn The Netherlands KENWOOD ELECTRONICS ITALIA S p A Via G Sirtori 7 9 20129 Milano Italy KENWOOD IBERICA S A Bolivia 239 08020 Barcelona Spain KENWOOD ELECTRONICS AUSTRALIA PTY LTD A C N 001 499 074 16 Giffno...

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